Detailed phenotyping of posterior vs. anterior circulation ischemic stroke: a multi-center MRI study

Petrea Frid, Mattias Drake, A. K. Giese, J. Wasselius, M. D. Schirmer, K. L. Donahue, L. Cloonan, R. Irie, M. J.R.J. Bouts, E. C. McIntosh, S. J.T. Mocking, A. V. Dalca, R. Sridharan, H. Xu, E. Giralt-Steinhauer, Lukas Holmegaard, Katarina Jood, J. Roquer, John W Cole, P. F. McArdleJ. P. Broderick, J. Jimenez-Conde, Christina Jern, B. M. Kissela, D. O. Kleindorfer, Robin Lemmens, J. F. Meschia, Tatjana Rundek, R. L. Sacco, R. Schmidt, Pankaj Sharma, A. Slowik, V. Thijs, D. Woo, B. B. Worrall, Steven J. Kittner, B. D. Mitchell, J. Petersson, Jonathan Rosand, P. Golland, Ona Wu, N. S. Rost, A. Lindgren, NINDS Stroke Genetics Network (SiGN), International Stroke Genetics Consortium, the MRI-Genetics Interface Exploration (MRI-GENIE)

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

7 Citeringar (SciVal)

Sammanfattning

Objective: Posterior circulation ischemic stroke (PCiS) constitutes 20–30% of ischemic stroke cases. Detailed information about differences between PCiS and anterior circulation ischemic stroke (ACiS) remains scarce. Such information might guide clinical decision making and prevention strategies. We studied risk factors and ischemic stroke subtypes in PCiS vs. ACiS and lesion location on magnetic resonance imaging (MRI) in PCiS. 

Methods: Out of 3,301 MRIs from 12 sites in the National Institute of Neurological Disorders and Stroke (NINDS) Stroke Genetics Network (SiGN), we included 2,381 cases with acute DWI lesions. The definition of ACiS or PCiS was based on lesion location. We compared the groups using Chi-squared and logistic regression. 

Results: PCiS occurred in 718 (30%) patients and ACiS in 1663 (70%). Diabetes and male sex were more common in PCiS vs. ACiS (diabetes 27% vs. 23%, p < 0.05; male sex 68% vs. 58%, p < 0.001). Both were independently associated with PCiS (diabetes, OR = 1.29; 95% CI 1.04–1.61; male sex, OR = 1.46; 95% CI 1.21–1.78). ACiS more commonly had large artery atherosclerosis (25% vs. 20%, p < 0.01) and cardioembolic mechanisms (17% vs. 11%, p < 0.001) compared to PCiS. Small artery occlusion was more common in PCiS vs. ACiS (20% vs. 14%, p < 0.001). Small artery occlusion accounted for 47% of solitary brainstem infarctions. 

Conclusion: Ischemic stroke subtypes differ between the two phenotypes. Diabetes and male sex have a stronger association with PCiS than ACiS. Definitive MRI-based PCiS diagnosis aids etiological investigation and contributes additional insights into specific risk factors and mechanisms of injury in PCiS.

Originalspråkengelska
Sidor (från-till)649-658
Antal sidor10
TidskriftJournal of Neurology
Volym267
Utgåva3
Tidigt onlinedatum2019 nov 11
DOI
StatusPublished - 2020 mar

Ämnesklassifikation (UKÄ)

  • Neurologi

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